Apparatus for delivering folded sheets.



H. A. W. WOOD.

APPARATUS FOR DELIVERING FOLDED SHEETS. APPLICATION FILED JUNE 16. l9l3.RENEWED DEC. I0. I917.

m t A an ll l u HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR, BYMESNE ASSIGNMENTS, T0

WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORA-TION or vrnernra.

APPATUS FOR DELIVERING FOLDED SHEETS.

Lfitififide.

Application filed June 16, 1913, Serial No. 773,918.

To all whom it may concern:

Be it known that I, HENRY A. Wrsn WOOD, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented a new and useful Apparatus for Delivering Folded Sheets,of which the following is a specification.

This invention relates to the delivery of folded sheets from the foldingmechanism of a web printing press.

The principal object of the invention is to provide for delivering thesheets by an apparatus, by which the uniform delivery of the sheetswithout buckling or crumpling will be assured, and by which the speed ofdelivery can be materially increased.

For the purpose of securing this result the paper as it comes from thefolding rolls is given a curve at the end of such. a nature thatlongitudinal buckling is prevented and that when the front end strikesthe fan blade it" will be capable of springing or yielding to preventboth longitudinal and lateral buckling of the front end.

Reference is t be had to the accompanying drawings, in which- Figure 1is an elevation of a fan delivery constructed in accordance with thisinvention; and i Fig. 2 is a similar view showing the parts in otherpositions.

So far as I am aware, folded sheets are delivered in pairs at thepresent time'from. rotary folders in a straight form. Therefore, thestraight bundle of sheets striking the fan blade have a tendency tobuckle between the fans during delivery, and the higher the speed thegreater the difliculty.

This invention is made for the purpose of securing a more uniformdelivered product and especially to provide for doing it at a high rateof speed so that the speed of the folder can be materially increased.

The invention is shown as arranged for taking folded bundles of sheetsfrom a pair of folding rolls 1(). Instead of the usual straight paperguide a guide 11 is mounted on a stationary support 12 and provided withan upper concave curvature at'll, and a lower convex curvature 11 on theoperative side, thus being of an ogee or S shape. The usual rotary fan2? having curved blades 13 is provided. his is located in Specificationof Letters Patent.

Renewed December 10, 1917. SerialNo. 206,544.

such position thatas the blades swing over into place for receiving theadvance end of the bundle of sheets they cross the line of the guide ata point near that at which the curvature changes from concave to convex.The usual stop 14 is provided mounted on a support 15 on the frame andthe'papers are delivered to delivery belts 16 or the like.

The method of delivery carried out by this apparatus is as follows :-Thefolded sheets coming down through the rolls 10 at an inclination withthe folded end forward strike the concave surface 11. Thus they aregiven a downward curve at the end uniform all theway across the bundle.As the bundle of sheets drops down the guide 11 this end curvatureismaintained until the end of the bundle of sheets strikes a fan blade.The formation of this curvature is indicated in the position A of Fig. 1while the next result of it is indicated in position B in Fig. 2. Tnthis latter position the curved bundle of sheets is just passing fromthe concave to'the convex portionof the The curvature of the sheets atthe guide. end is maintained until the sheets strike the fan blade 13which then just comes into proper position to receive the sheets. Theresult at this point is important. With the bundle of sheets arranged ina plane, the

sudden striking of the end thereof against the fan blade would have atendency to buckle the sheets longitudinally at a point near the advanceend, and ordinarily there is no way of controlling this. But on. accountof the preliminary curve which has been given the bundle of sheets andwhich is maintained, as described herein, this curved end is unsupportedat both edges when it strikes the fan blade. This causes the fan bladeimmediately to turn this advanced end reversely all the Way across asindicated by the arrow in Fig. 2. dinal crumpling is eliminatedand allthe bundles of sheets are affected in the same way and a uniform productis secured. It is to be understood, of course, that the fan bladesrotate more slowly than the speed of the bundle of sheets down theguide, as is usually the case. Thus the speed of the sheets is retardedby the fan blade at the same time that the curvature is changed. By thismethod also it will be seen that the blades of the fan take the bundleof sheets Patented May at, am;

Tn this Way longitualong the convex surface of the guide throughout theremainder of the travel thereof vwith the blades. Two other positions ofthe bundle are shown at C and D in Figs. 1 and 2 respectively. At thebottom the bundles strike the stops in the usual way and the sheets aredeposited on the de-- The method of delivering livery belts. herein setforth is not claimed in this patent as it has been made the subject ofmy divisional application filed December 3, 1917 on a method ofdelivering folded sheets,

Serial No. 205,136.

Although I have illustrated and described only one application of theinvention, I am aware of the fact that many modifications can be madetherein by any person skilled in theart without departing from the scopeof the invention as expressed in the claims.

Therefo're, I do not wish to be limited in these respects, but what I doclaim is 1. In an apparatus for delivering folded sheets, thecombination of a pair of-folding 7 rolls and curving them, and aconvex-curve delivered and effective to curve said sheets below the sameand continuous therewith, a rotary fan having blades movable forwardlyalong the convex curve for receiving the ends of the sheets and keepingthem in contact with said convex-curve, and a stationary stop located atthe bottom of said guide for receiving the ends of the sheets as theyare dropped from the blades, the-blades being located to withdraw pastthe guide before the sheets engage the stop. 1

3. In an apparatus for delivering folded sheets, the combination of apair of folding rolls, a curved paper guide having a concave surfacefacing the edges of the sheets thus and a convex curve, and a rotary fanin positlon to receive the ends of the sheets from the concave part ofsaid curved guide and reverse their curvatures along said concave curveto prevent their buckling or crumpling.

4. In an apparatus for delivering folded sheets, the combination of apair of folding rolls effective to deliver folded sheets, a curved paperguide having a concave surface facing the edges of the sheets thusdelivered and effective to curve said sheets, and a rotary fan inposition to receive the ends of the sheets from said curved guide whilein the curved shape caused thereby and reverse their curvature toprevent their buckling or crumpling.

5. In a sheet folding and delivering mechanism, a pair of folding rollsand a rotary sheet laying fan, in combination with means for causing thesheet to assume an S-shaped curve during itstransmission from thefolding rolls to the point of delivery.

6. In a sheet folding and delivering mechanism, a pair of folding rollsand a rotary sheet laying fan, in combination with means for somaintaining the curvature of the sheet at all points between the foldingrolls and the point of delivery to the fan that the moving sheet willresist the tendency to buckle in the direction of its line of travel.

7 In a sheet delivery apparatus, the combination with a concave guideadapted to receive the advancing end of a sheet and curve the same intoa concave form, of a rotary fan located in position to receive theadvance end while maintained in such concave form and immediatelyreverse its curvature.

8. In a sheet delivery, the combination with a guide adapted to receivethe forward end of an advancing sheet and bend it into curved form atthe end, the curve being uniform across the sheet, of a rotary fanlocated in position to receive said end while so curved and prevent itsassuming a flat shape.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

HENRY A. WISE W'OOD.

\Vitnesses:

B. M. STOELER, LILLIAN C. JONES.

